The “MASON’S / PATENT / NOV 30TH / 1858” phrase was originally embossed on countless “screw top” glass fruit jars (canning jars),  most ranging in age from circa 1858 to the mid-1910s. Note: many reproductions of these jars have been made (from the 1970s all the way up to the present time), which … Continue reading MASON’S PATENT NOV 30TH 1858 Fruit Jars – Summary